Set-OPS-Public/roles/serveur_postgresql/tasks/main.yml

---
- name: Installer PostgreSQL
  ansible.builtin.apt:
    name: "{{ serveur_postgresql_packages }}"
    state: present
    update_cache: true
    cache_valid_time: 3600

- name: Lister les clusters PostgreSQL installes
  ansible.builtin.find:
    paths: /etc/postgresql
    file_type: directory
    recurse: false
  register: serveur_postgresql_clusters

- name: Determiner la version du cluster
  ansible.builtin.set_fact:
    serveur_postgresql_version_effective: >-
      {{ serveur_postgresql_version
         or (serveur_postgresql_clusters.files | map(attribute='path') | map('basename')
             | select('match', '^[0-9]+$') | sort | last | default('')) }}      

- name: Refuser si aucun cluster PostgreSQL n'est present
  ansible.builtin.assert:
    that:
      - serveur_postgresql_version_effective | length > 0
    fail_msg: "Aucun cluster PostgreSQL trouve sous /etc/postgresql."

- name: Definir le repertoire de configuration du cluster
  ansible.builtin.set_fact:
    serveur_postgresql_conf_dir: "/etc/postgresql/{{ serveur_postgresql_version_effective }}/main"

- name: Assurer le repertoire conf.d
  ansible.builtin.file:
    path: "{{ serveur_postgresql_conf_dir }}/conf.d"
    state: directory
    owner: postgres
    group: postgres
    mode: "0755"

# --- TLS : synchroniser le cert step_ca AVANT d'activer ssl (ordre critique) ---
- name: TLS — assurer le repertoire des certificats (postgres)
  ansible.builtin.file:
    path: "{{ serveur_postgresql_tls_dir }}"
    state: directory
    owner: postgres
    group: postgres
    mode: "0700"
  when: serveur_postgresql_tls_actif | bool

- name: TLS — deployer le script de synchronisation du certificat
  ansible.builtin.template:
    src: setops-postgresql-cert-sync.sh.j2
    dest: /usr/local/sbin/setops-postgresql-cert-sync
    owner: root
    group: root
    mode: "0755"
  when: serveur_postgresql_tls_actif | bool

- name: TLS — deployer les unites de synchronisation (service + path)
  ansible.builtin.template:
    src: "{{ item.s }}"
    dest: "{{ item.d }}"
    owner: root
    group: root
    mode: "0644"
  loop:
    - { s: "setops-postgresql-cert-sync.service.j2", d: "/etc/systemd/system/setops-postgresql-cert-sync.service" }
    - { s: "setops-postgresql-cert-sync.path.j2", d: "/etc/systemd/system/setops-postgresql-cert-sync.path" }
  loop_control:
    label: "{{ item.d | basename }}"
  when: serveur_postgresql_tls_actif | bool

- name: TLS — activer la surveillance du certificat (path)
  ansible.builtin.systemd:
    name: setops-postgresql-cert-sync.path
    enabled: true
    state: started
    daemon_reload: true
  when:
    - serveur_postgresql_tls_actif | bool
    - not ansible_check_mode

- name: TLS — synchroniser le certificat maintenant
  ansible.builtin.command: /usr/local/sbin/setops-postgresql-cert-sync
  changed_when: false
  when:
    - serveur_postgresql_tls_actif | bool
    - not ansible_check_mode

- name: TLS — verifier la presence du certificat synchronise
  ansible.builtin.stat:
    path: "{{ serveur_postgresql_tls_dir }}/{{ item }}"
  register: serveur_postgresql_tls_stat
  loop:
    - server.crt
    - server.key
  when:
    - serveur_postgresql_tls_actif | bool
    - not ansible_check_mode

- name: TLS — garde-fou, refuser d'activer ssl sans certificat en place
  ansible.builtin.assert:
    that:
      - item.stat.exists
    fail_msg: "Certificat PG absent ({{ item.item }}) — ssl non active pour ne rien casser."
  loop: "{{ serveur_postgresql_tls_stat.results | default([]) }}"
  loop_control:
    label: "{{ item.item }}"
  when:
    - serveur_postgresql_tls_actif | bool
    - not ansible_check_mode

- name: Deployer la configuration Set-OPS
  ansible.builtin.template:
    src: 99-setops.conf.j2
    dest: "{{ serveur_postgresql_conf_dir }}/conf.d/99-setops.conf"
    owner: postgres
    group: postgres
    mode: "0640"
  notify: Redemarrer PostgreSQL

- name: Deployer pg_hba.conf
  ansible.builtin.template:
    src: pg_hba.conf.j2
    dest: "{{ serveur_postgresql_conf_dir }}/pg_hba.conf"
    owner: postgres
    group: postgres
    mode: "0640"
  notify: Recharger PostgreSQL

- name: Activer et demarrer PostgreSQL
  when: not ansible_check_mode
  ansible.builtin.systemd:
    name: "{{ serveur_postgresql_service_name }}"
    enabled: true
    state: started

- name: Appliquer la configuration en attente avant le provisioning
  ansible.builtin.meta: flush_handlers

- name: Creer les comptes applicatifs PostgreSQL
  community.postgresql.postgresql_user:
    name: "{{ item.nom }}"
    password: "{{ item.mot_de_passe }}"
    role_attr_flags: "{{ item.attributs | default('LOGIN') }}"
    state: present
  become: true
  become_user: postgres
  loop: "{{ serveur_postgresql_comptes }}"
  loop_control:
    label: "{{ item.nom }}"
  no_log: true
  when: serveur_postgresql_comptes | length > 0

- name: Creer les bases applicatives PostgreSQL
  community.postgresql.postgresql_db:
    name: "{{ item.nom }}"
    owner: "{{ item.proprietaire | default(item.nom) }}"
    encoding: "{{ item.encodage | default('UTF8') }}"
    state: present
  become: true
  become_user: postgres
  loop: "{{ serveur_postgresql_bases }}"
  loop_control:
    label: "{{ item.nom }}"
  when: serveur_postgresql_bases | length > 0

# --- Provisioning depuis le registre partage instance/plan/bases-donnees.yml ---

- name: Charger le registre des bases applicatives
  ansible.builtin.include_vars:
    file: "{{ setops_plan_dir }}/bases-donnees.yml"
  failed_when: false

- name: Determiner les serveurs BD nommes heberges par ce groupe
  ansible.builtin.set_fact:
    serveur_postgresql_noms_bd: >-
      {{ (serveurs_bd | default({})) | dict2items
         | selectattr('value.groupe', 'defined')
         | selectattr('value.groupe', 'equalto', serveur_postgresql_groupe)
         | map(attribute='key') | list }}      

- name: Selectionner les bases hebergees par ce serveur
  ansible.builtin.set_fact:
    serveur_postgresql_registre: >-
      {{ (bases_donnees | default({})) | dict2items
         | selectattr('value.serveur', 'defined')
         | selectattr('value.serveur', 'in', serveur_postgresql_noms_bd)
         | list }}      

- name: Creer les comptes proprietaires (registre)
  community.postgresql.postgresql_user:
    name: "{{ item.value.proprietaire }}"
    password: "{{ lookup('vars', item.value.secret) }}"
    role_attr_flags: "LOGIN"
    state: present
  become: true
  become_user: postgres
  loop: "{{ serveur_postgresql_registre }}"
  loop_control:
    label: "{{ item.value.proprietaire }}"
  no_log: true
  when: serveur_postgresql_registre | length > 0

- name: Creer les bases applicatives (registre)
  community.postgresql.postgresql_db:
    name: "{{ item.value.base }}"
    owner: "{{ item.value.proprietaire }}"
    encoding: UTF8
    state: present
  become: true
  become_user: postgres
  loop: "{{ serveur_postgresql_registre }}"
  loop_control:
    label: "{{ item.value.base }}"
  when: serveur_postgresql_registre | length > 0

# --- Sonde de supervision (docs/supervision-conception.md) --------------------------
# Le role qui possede la verite depose sa propre sonde ; le porteur (`client_sante`) la
# fait tourner et pousse le verdict, sans savoir ce qu'elle mesure.
- name: Assurer le repertoire des sondes de supervision
  ansible.builtin.file:
    path: /usr/local/lib/setops/sondes
    state: directory
    owner: root
    group: root
    mode: "0755"

- name: Deposer la sonde « base »
  ansible.builtin.template:
    src: sonde-base.sh.j2
    dest: /usr/local/lib/setops/sondes/base.sh
    owner: root
    group: root
    mode: "0750"